Remove an internal exception for invalid utf8 entry format; it should have been an IllegalArgumentException but was an arbitrary subtype of RuntimeException. Converted to throw ConstantPoolException, and consolidated into a single method to reduce code size.
------------- Commit messages: - 8340132: Remove internal CpException for reading malformed utf8 Changes: https://git.openjdk.org/jdk/pull/21027/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21027&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8340132 Stats: 17 lines in 1 file changed: 4 ins; 8 del; 5 mod Patch: https://git.openjdk.org/jdk/pull/21027.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/21027/head:pull/21027 PR: https://git.openjdk.org/jdk/pull/21027
